CN211421151U - Double-walled steel cofferdam based on picture peg - Google Patents

Abstract

The utility model discloses a double-wall steel cofferdam based on plugboards, which comprises a steel cofferdam body, wherein the cofferdam wallboard is a wallboard with a blade foot or a wallboard with a plugboard, the outer side of the bottom of a suspended wallboard segment in the wallboard with the plugboard is provided with a plugboard group, the plugboard group is a plugboard group to be anchored, and each suspended wallboard segment is fixed with the plugboard group arranged on the outer side of the suspended wallboard segment into a whole through a plugboard anchoring structure; and bottom plugging structures are arranged on the outer sides between two adjacent vertical plugboards in the plugboard group to be anchored. The utility model has the advantages of reasonable design and the construction is simple and convenient, excellent in use effect, adopt the group of picture peg to support cantilever wallboard festival section bottom to organize the fastening with the picture peg in cantilever wallboard festival section rather than the outside through picture peg anchor structure and connect as an organic wholely, can not only effectively improve the support steadiness in steel cofferdam, cantilever wallboard festival section bottom can adapt to the topography change of riverbed, and can effectively improve the anti deformability of cantilever wallboard festival section bottom picture peg group, can effectively simplify the back cover process in steel cofferdam.

Description

Double-walled steel cofferdam based on picture peg

Technical Field

The utility model relates to a steel cofferdam especially relates to a double-walled steel cofferdam based on picture peg.

Background

The steel cofferdam is a water retaining structure for bearing platform construction, the steel cofferdam is generally adopted in the deep water foundation construction of the bridge, and the commonly used cofferdam can be divided into a single-wall cofferdam and a double-wall cofferdam according to the structure. When the steel cofferdam is adopted to construct the underwater pier bearing platform, the steel cofferdam needs to be firstly put down to the riverbed. When the bridge deepwater foundation with slope rock riverbed with large elevation difference change, riverbed with large height-projected pit-depression change, no covering layer or thin covering layer and large fluctuation change of riverbed rock surface is constructed, the bottom of the steel cofferdam can be suspended due to the unevenness of the riverbed surface, in order to ensure that the bottom of the steel cofferdam can be fully contacted and connected with the riverbed, a gap between the bottom of the steel cofferdam and the riverbed needs to be plugged by using the plugboard, the plugboard can furthest reduce the gap between the double-arm steel cofferdam and the riverbed, so that the bottom of a foundation pit of the double-wall steel cofferdam does not need to be horizontal, the blasting and dismantling treatment of high-projection part rocks at the bottom of the riverbed before the steel cofferdam is put down is reduced, even boulders which are difficult to be removed on the riverbed can be allowed, the underwater blasting amount of the foundation pit and the excavation removal amount of the foundation pit are reduced, and the construction amount of, the construction period is saved, and the method is economical and practical. On the other hand, if solve the unsettled problem in steel cofferdam bottom through the blasting excavation depth of deepening steel cofferdam bottom foundation ditch, steel cofferdam overall height also needs corresponding increase to foundation ditch excavation work load increases, can the greatly increased cost like this, and construction cycle is longer simultaneously.

At present, when the gap between the bottom of the steel cofferdam and the riverbed is plugged by arranging the plugboards at the outer side of the steel cofferdam, the adopted plugboards are arranged at intervals, so that the plugboards cannot completely plug the gap between the bottom of the steel cofferdam and the riverbed, and the adopted plugboards are usually only inserted at the outer side of the steel cofferdam and are in contact with the bottom riverbed, so that the situation that the plugboards are not firm exists. In addition, after all the inserting plates are inserted, the gaps of the inserting plates are also required to be plugged by timely filling plugging structures such as reinforcing steel sheet gabions and the like at the outer side of the inserting plates, and the inserting plates are fixed through the plugging structures such as the reinforcing steel sheet gabions and the like, so that the plugging structures such as the reinforcing steel sheet gabions and the like simultaneously play a role in stabilizing the inserting plates; meanwhile, in order to balance the internal and external pressure of the plugboard and prevent the plugboard from being stressed too much to be bent inwards, bagged concrete needs to be thrown and filled at the periphery of the inner side of the plugboard, the actual engineering quantity is very large, and when the plugboard is fixed through a plugging structure such as a steel rib sheet gabion, the problems of inconvenience in fixing, insecure fixing and the like exist, and the plugboard gap plugging is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed against, provide a double-walled steel cofferdam based on picture peg, its simple structure, reasonable in design and construction are simple and convenient, excellent in use effect, adopt picture peg group to support cantilever wallboard festival section bottom, and organize fastening connection as an organic whole with the picture peg in cantilever wallboard festival section rather than the outside through picture peg anchor structure, can not only effectively improve the support steadiness of steel cofferdam, cantilever wallboard festival section bottom can adapt to the topography change of riverbed, and can effectively improve the resistance to deformation ability of cantilever wallboard festival section bottom picture peg group, can effectively simplify the back cover process of steel cofferdam.

In order to solve the technical problem, the utility model discloses a technical scheme is: a double-walled steel cofferdam based on picture peg which characterized in that: the steel cofferdam comprises a steel cofferdam body, wherein the steel cofferdam body is a cubic steel pouring jacket supported on a rock riverbed, and the cross section of the cubic steel pouring jacket is rectangular; the steel cofferdam body is vertically arranged and formed by splicing four cofferdam wall plates which are vertically arranged;

the cofferdam wallboard is a wallboard with edge feet, the bottom of which is horizontally supported on a rock riverbed, or a wallboard with plugboards, the outer side of the bottom of which is provided with a plugboard group, the upper surface of the rock riverbed at the supporting position of the bottom of the wallboard with edge feet is a horizontal plane, and the bottom of the wallboard with edge feet is provided with edge feet; the wall plate with the inserting plate is formed by splicing a wall plate section with a cutting edge and a suspended wall plate section, the upper surface of a rock river bed at the supporting position of the bottom of the wall plate section with the cutting edge is a horizontal plane, and the cutting edge is arranged at the bottom of the wall plate section with the cutting edge; the blade foot is supported on a rock riverbed; the suspended wall plate segment and the wall plate segment with the edge foot are both rectangular;

the outer side of the bottom of each suspended wallboard segment is provided with one plugboard group, the plugboard groups are to-be-anchored plugboard groups, and each suspended wallboard segment is fixed with the plugboard group arranged on the outer side of the suspended wallboard segment into a whole through a plugboard anchoring structure; each plug board group to be anchored comprises a plurality of vertical plug boards, the vertical plug boards are arranged on the same vertical surface, and each vertical plug board is a steel plug board which is inserted into the outer side of the suspended wall board section from top to bottom; each plugboard anchoring structure comprises a transverse connecting beam positioned on the inner side of the plugboard group to be anchored, an upper fixing beam positioned above the inner side of the transverse connecting beam and a plurality of inclined pulling and bonding parts connected between the transverse connecting beam and the upper fixing beam, wherein the transverse connecting beam and the upper fixing beam are horizontally arranged and are arranged in parallel, the plurality of inclined pulling and bonding parts are arranged in parallel and gradually incline downwards from inside to outside, and the plurality of inclined pulling and bonding parts are arranged on the same plane; a plurality of inserting components for inserting vertical inserting plates are arranged on the outer side wall of the suspended wallboard segment, each vertical inserting plate is inserted into one inserting component, and the bottom of each vertical inserting plate is supported on a rock riverbed; the suspended wall plate segment is an anchoring wall plate for anchoring the inserting plate group to be anchored, and the transverse connecting beam is positioned below the anchoring wall plate; the plurality of vertical plug boards in the plug board group to be anchored are arranged in parallel with the anchoring wall board positioned on the inner side of the vertical plug boards, the transverse connecting beam and the upper fixing beam are arranged in parallel with the anchoring wall board, and the upper fixing beam is fixed at the bottom of the inner side of the anchoring wall board; the plurality of inclined pulling pieces are arranged from front to back along the length direction of the transverse connecting beam, the lower end of each inclined pulling piece is fixed on the transverse connecting beam, the upper end of each inclined pulling piece is fixed on the upper fixing beam, the upper fixing beam is provided with a plurality of upper mounting holes for mounting the inclined pulling pieces from front to back, and the transverse connecting beam is provided with a plurality of lower mounting holes for mounting the inclined pulling pieces from front to back; each vertical inserting plate is positioned between two adjacent front and back inclined pulling parts, each inclined pulling part is finish-rolled deformed steel bar, and two ends of each inclined pulling part are provided with a locking nut; the outer sides of two adjacent vertical inserting plates in the inserting plate group to be anchored are provided with bottom plugging structures, the bottom plugging structures are supported on a rock riverbed, and the bottom plugging structures are vertical plugging structures for plugging a gap between two adjacent vertical inserting plates in the inserting plate group to be anchored.

The double-wall steel cofferdam based on the inserting plates is characterized in that: the rock riverbed is a slope rock riverbed, and one vertex angle of the steel cofferdam body is a suspended hanging foot with a suspended bottom; the steel cofferdam body comprises two blade foot wall plates and two board inserting wall plates, and the suspended hanging feet are two included angles between the board inserting wall plates.

The double-wall steel cofferdam based on the inserting plates is characterized in that: the vertical inserting plate is made of I-shaped steel, and a web plate of the vertical inserting plate and the anchoring wallboard are vertically arranged.

The double-wall steel cofferdam based on the inserting plates is characterized in that: the transverse connecting beam is a channel steel with an inward notch, and the lower mounting hole is positioned on a web plate of the transverse connecting beam; the transverse connecting beam and the plurality of vertical inserting plates in the anchoring inserting plate group are welded and fixed into a whole.

The double-wall steel cofferdam based on the inserting plates is characterized in that: each cofferdam wall plate is formed by assembling an inner wall plate, an outer wall plate which is arranged on the outer side of the inner wall plate and is arranged in parallel with the inner wall plate, and an inner support structure which is arranged between the inner wall plate and the outer wall plate;

the upper fixing beam is fixed at the bottom of the inner side of the outer wall plate of the anchoring wall plate.

The double-wall steel cofferdam based on the inserting plates is characterized in that: the upper fixing beam is a right-angle steel, one right-angle side of the right-angle steel is an outer fixing plate which is vertically arranged and welded and fixed at the bottom of the inner side of the outer wall plate, the other right-angle side of the right-angle steel is an upper fixing plate which is horizontally arranged, and the upper mounting hole is formed in the upper fixing plate.

The double-wall steel cofferdam based on the inserting plates is characterized in that: the locking nut arranged at the upper end of the inclined pulling piece is an upper nut, a plurality of inclined pulling pieces form an inclined pulling group of the anchoring plugboard group, and an anchoring support for anchoring the upper nuts on all the inclined pulling pieces in the inclined pulling group is arranged on the inner side of the upper fixing beam; the anchoring support is horizontally arranged and is arranged in parallel with the upper fixing beam, and the upper nuts on all the inclined pulling pieces in the inclined pulling group are fixed on the anchoring support.

The double-wall steel cofferdam based on the inserting plates is characterized in that: the anchoring support is composed of two symmetrically arranged channel steels, the two channel steels are horizontally arranged and are both arranged in parallel with the upper fixing beam, a fixing groove for fixing the upper nut is formed between webs of the two channel steels in the anchoring support, the fixing groove is gradually inclined downwards from inside to outside and is positioned on the same plane with the inclined tie piece;

two in the anchor support the channel-section steel is for being located respectively inboard channel-section steel and the outside channel-section steel of the inside and outside both sides of upper nut, a flange welded fastening of inboard channel-section steel is in on the external fixation board, a flange welded fastening of outside channel-section steel is in on the upper fixation board.

The double-wall steel cofferdam based on the inserting plates is characterized in that: the structure and the size of a plurality of vertical insertion plates in the anchored insertion plate group are the same, and the vertical insertion plates are uniformly distributed.

The double-wall steel cofferdam based on the inserting plates is characterized in that: each plug-in components comprises a lower slot positioned on the outer side of the bottom of the anchoring wallboard and an upper slot positioned right above the lower slot, the upper slot and the lower slot are identical in structure and size and are concave-shaped plugboard slots, and the concave-shaped plugboard slots are fixed on the outer side wall of the anchoring wallboard.

Compared with the prior art, the utility model has the following advantage:

1. simple structure, reasonable in design and processing preparation are simple and convenient, and the input cost is lower.

2. The construction is simple and convenient, the construction efficiency is high, and the input manpower and material resources are less.

3. The picture peg anchor structural design who adopts is reasonable, simple and convenient and excellent in use effect of processing preparation, economical and practical, this picture peg anchor structure construction is simple and convenient and the efficiency of construction is high, the manpower and materials that drop into are few, just with a plurality of picture pegs and the anchor of cofferdam wallboard anchor as an organic whole in the cartridge in the cofferdam wallboard outside through the multichannel finish rolling screw thread of connecting between transverse connection roof beam and last fixed beam, can effectively improve the steadiness of each picture peg, and pass through transverse connection roof beam fastening connection with a plurality of picture pegs as an organic whole, can effectively improve the anti deformability of a plurality of picture pegs.

4. Good and practical value of result of use is high, can effectively solve because of there is unsettled messenger cofferdam outside leaking stoppage unable implementation and bring very big difficult practical problem for cofferdam back cover concrete construction bottom the steel cofferdam, for reducing the foundation ditch excavation degree of depth, make the transfer degree of depth of steel cofferdam remain unchanged, the utility model discloses adopt in unsettled position department in the bottom surface and successfully solve the unsettled problem of steel cofferdam with the wall plate anchor of cofferdam group, and because transverse connection roof beam carries out spacingly and consolidates in picture peg group inboard, need not to set up a structure in order to balance internal and external pressure in picture peg group inboard, therefore only need adopt bottom block structure carry on under water the shutoff from the outside can, can simplify the cofferdam back cover process by a wide margin, effectively practice thrift construction cost to can accelerate the construction progress.

To sum up, the utility model has the advantages of simple structure and reasonable design and the construction is simple and convenient, excellent in use effect, adopt the group of picture peg group to support cantilever wallboard festival section bottom to organize fastening connection as an organic whole with the picture peg in cantilever wallboard festival section rather than the outside through picture peg anchor structure, can not only effectively improve the support steadiness in steel cofferdam, cantilever wallboard festival section bottom can adapt to the topography variation of riverbed, and can effectively improve the resistance to deformation ability of cantilever wallboard festival section bottom picture peg group, can effectively simplify the back cover process in steel cofferdam.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic plan view of the present invention.

Fig. 2 is a schematic view of the plane structure of the joint of the two wall boards with inserting boards of the present invention.

Fig. 3 is a schematic structural view of the insert plate anchoring structure of the present invention.

Fig. 4 is a schematic view of the vertical structure of the insertion board set to be anchored and the transverse connecting beam of the present invention.

Fig. 5 is a schematic plan view of the panel group to be anchored and the anchoring wall panel of the present invention.

Fig. 6 is a schematic structural view of the bottom plugging structure and the insertion plate set to be anchored of the present invention.

Description of reference numerals:

1-transverse connecting beam; 1-inner wall panel; 1-2-outer wall panels;

1-3-a support truss; 2, an upper fixed beam; 3, an oblique pulling piece;

4, vertical inserting plates; 5, locking a nut; 6, anchoring a support;

7-a concave inserting plate groove; 8-rock riverbed; 9-waterproof board;

10-sandbag.

Detailed Description

As shown in fig. 1 and 2, the steel cofferdam of the utility model comprises a steel cofferdam body, which is a cubic steel pouring jacket supported on a rock riverbed 8, and the cross section of the cubic steel pouring jacket is rectangular; the steel cofferdam body is vertically arranged and formed by splicing four cofferdam wall plates which are vertically arranged;

the cofferdam wallboard is a wallboard with edge feet, the bottom of which is horizontally supported on the rock riverbed 8, or a wallboard with plugboards, the outer side of the bottom of which is provided with a plugboard group, the upper surface of the rock riverbed 8 at the supporting position of the bottom of the wallboard with edge feet is a horizontal plane, and the bottom of the wallboard with edge feet is provided with edge feet; the wall plate with the inserting plate is formed by splicing a wall plate segment with a cutting edge foot and a suspended wall plate segment, the upper surface of a rock river bed 8 at the supporting position of the bottom of the wall plate segment with the cutting edge foot is a horizontal plane, and the cutting edge foot is arranged at the bottom of the wall plate segment with the cutting edge foot; the blade foot is supported on a rock riverbed 8; the suspended wall plate segment and the wall plate segment with the edge foot are both rectangular;

with reference to fig. 3, 4 and 5, the outer side of the bottom of each suspended wall panel segment is provided with one insert plate group, the insert plate group is an insert plate group to be anchored, and each suspended wall panel segment is fixed with the insert plate group arranged at the outer side of the suspended wall panel segment into a whole through an insert plate anchoring structure; each plug board group to be anchored comprises a plurality of vertical plug boards 4, the vertical plug boards 4 are arranged on the same vertical surface, and each vertical plug board 4 is a steel plug board which is inserted into the outer side of the suspended wall board section from top to bottom; each plug board anchoring structure comprises a transverse connecting beam 1 positioned on the inner side of the plug board group to be anchored, an upper fixing beam 2 positioned on the inner side of the transverse connecting beam 1 and a plurality of inclined bonding pieces 3 connected between the transverse connecting beam 1 and the upper fixing beam 2, wherein the transverse connecting beam 1 and the upper fixing beam 2 are horizontally arranged, the transverse connecting beam 1 and the upper fixing beam 2 are arranged in parallel, the inclined bonding pieces 3 are arranged in parallel and gradually incline downwards from inside to outside, and the inclined bonding pieces 3 are arranged on the same plane; a plurality of plug-in components for plug-in mounting of the vertical plug-in boards 4 are arranged on the outer side wall of the suspended wallboard segment, each vertical plug-in board 4 is plugged in one plug-in component, and the bottom of each vertical plug-in board 4 is supported on a rock riverbed 8; the suspended wall plate segment is an anchoring wall plate for anchoring the inserting plate group to be anchored, and the transverse connecting beam 1 is positioned below the anchoring wall plate; the vertical insertion plates 4 in the insertion plate group to be anchored are arranged in parallel with the anchoring wall plates positioned on the inner sides of the vertical insertion plates, the transverse connecting beams 1 and the upper fixing beams 2 are arranged in parallel with the anchoring wall plates, and the upper fixing beams 2 are fixed at the bottoms of the inner sides of the anchoring wall plates; the plurality of the inclined pulling pieces 3 are arranged from front to back along the length direction of the transverse connecting beam 1, the lower end of each inclined pulling piece 3 is fixed on the transverse connecting beam 1, the upper end of each inclined pulling piece 3 is fixed on the upper fixing beam 2, the upper fixing beam 2 is provided with a plurality of upper mounting holes for mounting the inclined pulling pieces 3 from front to back, and the transverse connecting beam 1 is provided with a plurality of lower mounting holes for mounting the inclined pulling pieces 3 from front to back; each vertical inserting plate 4 is positioned between two adjacent front and back inclined pulling parts 3, each inclined pulling part 3 is finish-rolled deformed steel bar, and two ends of each inclined pulling part 3 are respectively provided with a locking nut 5; and the outer sides of every two adjacent vertical inserting plates 4 in the inserting plate group to be anchored are provided with bottom plugging structures, the bottom plugging structures are supported on a rock riverbed 8, and the bottom plugging structures are vertical plugging structures for plugging a gap between every two adjacent vertical inserting plates 4 in the inserting plate group to be anchored.

In this embodiment, the rock riverbed 8 is a slope rock riverbed, and one vertex angle of the steel cofferdam body is a suspended hanging foot with a suspended bottom; the steel cofferdam body comprises two blade foot wall plates and two board inserting wall plates, and the suspended hanging feet are two included angles between the board inserting wall plates.

In this embodiment, as shown in fig. 3, the vertical insertion plate 4 is an i-steel, and a web plate of the vertical insertion plate 4 is vertically arranged with the anchoring wall plate.

Each plug-in components comprises a lower slot positioned on the outer side of the bottom of the anchoring wallboard and an upper slot positioned right above the lower slot, the structures and the sizes of the upper slot and the lower slot are the same, the upper slot and the lower slot are concave-shaped plugboard slots 7, and the concave-shaped plugboard slots 7 are fixed on the outer side wall of the anchoring wallboard.

During the in-service use, vertical picture peg 4 also can adopt the picture peg of other types, the cartridge also can adopt the cartridge groove of other types, only need can satisfy vertical picture peg 4's cartridge demand can.

As shown in fig. 1, the transverse connecting beam 1 is a channel steel with an inward notch, and the lower mounting hole is located on a web plate of the transverse connecting beam 1; the transverse connecting beam 1 and the vertical inserting plates 4 in the anchored inserting plate group are welded and fixed into a whole.

In this embodiment, the lock nut 5 mounted on the lower end of the diagonal tie member 3 is located outside the web of the transverse connecting beam 1.

In the embodiment, each cofferdam wall plate is formed by assembling an inner wall plate 1-1, an outer wall plate 1-2 which is arranged at the outer side of the inner wall plate 1-1 and is arranged in parallel with the inner wall plate 1-1, and an inner support structure which is arranged between the inner wall plate 1-1 and the outer wall plate 1-2;

the upper fixing beam 2 is fixed at the bottom of the inner side of the outer wall plate 1-2 of the anchoring wall plate.

In this embodiment, the inner wall plate 1-1 and the outer wall plate 1-2 are both rectangular and both vertical steel plates, and the inner support structure is a support truss 1-3 connected between the inner wall plate 1-1 and the outer wall plate 1-2.

And the double-wall steel cofferdam is a double-wall steel pouring jacket.

For simple and convenient fixing and convenient connection, the upper fixing beam 2 is a right-angle steel, one right-angle side of the right-angle steel is an outer fixing plate which is vertically arranged and is welded and fixed at the bottom of the inner side of the outer wall plate 1-2, the other right-angle side of the right-angle steel is an upper fixing plate which is horizontally arranged, and the upper mounting hole is positioned on the upper fixing plate.

In this embodiment, the bottom surface of the upper fixing plate is flush with the bottom surface of the outer wall plate 1-2.

For firm fixation, the locking nut 5 arranged at the upper end of the oblique pulling part 3 is an upper nut, a plurality of oblique pulling parts 3 form an oblique pulling group of the anchoring plugboard group, and the inner side of the upper fixing beam 2 is provided with an anchoring support 6 for anchoring the upper nuts on all the oblique pulling parts 3 in the oblique pulling group; the anchoring support 6 is horizontally arranged and is arranged in parallel with the upper fixed beam 2, and the upper nuts on all the inclined drawknot pieces 3 in the inclined drawknot group are fixed on the anchoring support 6.

In this embodiment, the anchoring support 6 is composed of two symmetrically arranged channel steels, both of the two channel steels are arranged horizontally and are arranged in parallel with the upper fixing beam 2, a fixing groove for fixing the upper nut is formed between webs of the two channel steels in the anchoring support 6, the fixing groove is gradually inclined downwards from inside to outside and is positioned on the same plane with the inclined tie member 3;

two in the anchor support 6 the channel-section steel is for being located respectively the inboard channel-section steel and the outside channel-section steel of the inside and outside both sides of upper nut, a flange welded fastening of inboard channel-section steel is in on the external fixation board, a flange welded fastening of outside channel-section steel is in on the upper fixation board.

In this example, the diameter of the finish-rolled deformed steel bar was set to 32 mm. During actual construction, the number of the finish-rolled deformed steel bars can be correspondingly adjusted according to specific requirements.

As shown in fig. 2, in this embodiment, the structures and the sizes of the plurality of vertical insertion plates 4 in the anchored insertion plate group are the same, and the plurality of vertical insertion plates 4 are uniformly distributed.

In this embodiment, all the sections of the vertical insertion plate 4 located below the anchoring wall plate are lower sections of the insertion plate, and the transverse connecting beam 1 is fixed to the lower sections of the insertion plate of the anchoring insertion plate group.

Before actual construction, conventional riverbed scanning equipment is adopted to scan the rock riverbed, two hanging heights of any position of the bottom of the anchoring wallboard in the wallboard with the inserting plate are determined according to the riverbed scanning condition, and the hanging heights of any position of the bottom of the anchoring wallboard are vertical distances between the position and the rock riverbed under the position. And then, respectively processing the two wallboard with plugboards and each vertical plugboard 4 of the group of plugboards to be anchored according to the determined suspension height of any position at the bottom of the anchoring wallboard in the two wallboard with plugboards. And when two wall plates with the inserting plates are processed, the bottom edge feet of the anchoring wall plate with the inserting plates are changed into straight angles, and an upper fixing beam 2 is fixed at the bottom of the inner side of the anchoring wall plate.

For simple anchoring, when the wallboard with the inserting plate is processed, the anchoring support 6 is fixed on the upper fixing beam 2, and the upper nuts of the inclined pulling pieces 3 are fixed on the anchoring support 6

After the steel cofferdam body is put down in place, respectively inserting a plurality of vertical inserting plates 4 in the inserting plate group to be anchored on the outer side of the anchoring wall plate with the inserting plate wall plates, and enabling the bottoms of the vertical inserting plates 4 to be supported on a rock riverbed 8; then, welding and fixing the transverse connecting beam 1 underwater; then, the plurality of inclined pulling pieces 3 are respectively installed, and all the inclined pulling pieces 3 are installed between the transverse connecting beam 1 and the upper fixing beam 2, so that the anchoring process of the socket group to be anchored is completed, the actual construction is very simple and convenient, the anchoring effect is good, and the socket group to be anchored and the anchoring wall plate positioned on the inner side of the socket group to be anchored are firmly connected into a whole.

And after the board groups to be anchored on the outer sides of the anchoring wallboards in the two wallboard with the plugboards are anchored, respectively arranging one bottom plugging structure on the outer side of the gap between two adjacent vertical plugboards 4 in each board group to be anchored. In this embodiment, as shown in fig. 6, the bottom blocking structure includes a sandbag blocking structure and a waterproof board 9 paved outside the sandbag blocking structure; the bottom of the waterproof plate 9 is arranged on the rock riverbed 8, the top of the waterproof plate 9 is fixed on the anchoring wall plate, and the sand bag plugging structure is a plugging wall built by a plurality of sand bags 10 from bottom to top.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.

Claims (10)

1. A double-walled steel cofferdam based on picture peg which characterized in that: the steel cofferdam comprises a steel cofferdam body, wherein the steel cofferdam body is a cubic steel pouring jacket supported on a rock riverbed (8), and the cross section of the cubic steel pouring jacket is rectangular; the steel cofferdam body is vertically arranged and formed by splicing four cofferdam wall plates which are vertically arranged;

the cofferdam wallboard is a wallboard with edge feet, the bottom of which is horizontally supported on the rock riverbed (8), or a wallboard with plugboards, the outer side of the bottom of which is provided with a plugboard group, the upper surface of the rock riverbed (8) at the supporting position of the bottom of the wallboard with edge feet is a horizontal plane, and the bottom of the wallboard with edge feet is provided with edge feet; the wall plate with the inserting plate is formed by splicing a wall plate segment with a cutting edge foot and a suspended wall plate segment, the upper surface of a rock river bed (8) at the supporting position of the bottom of the wall plate segment with the cutting edge foot is a horizontal plane, and the cutting edge foot is arranged at the bottom of the wall plate segment with the cutting edge foot; the blade foot is supported on a rock riverbed (8); the suspended wall plate segment and the wall plate segment with the edge foot are both rectangular;

the outer side of the bottom of each suspended wallboard segment is provided with one plugboard group, the plugboard groups are to-be-anchored plugboard groups, and each suspended wallboard segment is fixed with the plugboard group arranged on the outer side of the suspended wallboard segment into a whole through a plugboard anchoring structure; each plug board group to be anchored comprises a plurality of vertical plug boards (4), the vertical plug boards (4) are arranged on the same vertical surface, and each vertical plug board (4) is a steel plug board which is inserted into the outer side of the suspended wall board section from top to bottom; each plug board anchoring structure comprises a transverse connecting beam (1) positioned on the inner side of the plug board group to be anchored, an upper fixing beam (2) positioned above the inner side of the transverse connecting beam (1) and a plurality of inclined bonding pieces (3) connected between the transverse connecting beam (1) and the upper fixing beam (2), wherein the transverse connecting beam (1) and the upper fixing beam (2) are horizontally arranged and are arranged in parallel, the inclined bonding pieces (3) are arranged in parallel and are gradually inclined downwards from inside to outside, and the inclined bonding pieces (3) are arranged on the same plane; a plurality of plug-in components for plug-in mounting of vertical plug-in boards (4) are arranged on the outer side wall of the suspended wallboard segment, each vertical plug-in board (4) is plugged in one plug-in component, and the bottom of each vertical plug-in board (4) is supported on a rock riverbed (8); the suspended wall plate segment is an anchoring wall plate for anchoring the inserting plate group to be anchored, and the transverse connecting beam (1) is positioned below the anchoring wall plate; the vertical inserting plates (4) in the inserting plate group to be anchored are arranged in parallel with the anchoring wall plate positioned on the inner side of the vertical inserting plates, the transverse connecting beam (1) and the upper fixing beam (2) are arranged in parallel with the anchoring wall plate, and the upper fixing beam (2) is fixed at the bottom of the inner side of the anchoring wall plate; the plurality of the oblique pulling pieces (3) are arranged from front to back along the length direction of the transverse connecting beam (1), the lower end of each oblique pulling piece (3) is fixed on the transverse connecting beam (1), the upper end of each oblique pulling piece (3) is fixed on the upper fixing beam (2), the upper fixing beam (2) is provided with a plurality of upper mounting holes for mounting the oblique pulling pieces (3) from front to back, and the transverse connecting beam (1) is provided with a plurality of lower mounting holes for mounting the oblique pulling pieces (3) from front to back; each vertical inserting plate (4) is positioned between two adjacent front and back inclined pulling parts (3), each inclined pulling part (3) is finish-rolled deformed steel bar, and two ends of each inclined pulling part (3) are respectively provided with a locking nut (5); the outer side between two adjacent vertical picture plates (4) in the picture plate group to be anchored is all provided with bottom block structure, bottom block structure supports on rock riverbed (8), bottom block structure is right two adjacent vertical picture plate (4) in the picture plate group to be anchored carry out the vertical block structure of shutoff in the clearance between vertical picture plate (4).

2. An insert plate-based double-walled steel cofferdam according to claim 1 wherein: the rock riverbed (8) is a slope rock riverbed, and one vertex angle of the steel cofferdam body is a suspended hanging foot with a suspended bottom; the steel cofferdam body comprises two blade foot wall plates and two board inserting wall plates, and the suspended hanging feet are two included angles between the board inserting wall plates.

3. An insert plate-based double-walled steel cofferdam according to claim 1 or 2, characterized in that: the vertical inserting plate (4) is made of I-shaped steel, and a web plate of the vertical inserting plate (4) and the anchoring wallboard are vertically arranged.

4. An insert plate-based double-walled steel cofferdam according to claim 1 or 2, characterized in that: the transverse connecting beam (1) is a channel steel with an inward notch, and the lower mounting hole is positioned on a web plate of the transverse connecting beam (1); the transverse connecting beam (1) and the plurality of vertical inserting plates (4) in the anchored inserting plate group are welded and fixed into a whole.

5. An insert plate-based double-walled steel cofferdam according to claim 1 or 2, characterized in that: each cofferdam wall plate is formed by assembling an inner wall plate (1-1), an outer wall plate (1-2) which is arranged at the outer side of the inner wall plate (1-1) and is arranged in parallel with the inner wall plate (1-1) and an inner support structure which is arranged between the inner wall plate (1-1) and the outer wall plate (1-2);

the upper fixing beam (2) is fixed at the bottom of the inner side of the outer wall plate (1-2) of the anchoring wall plate.

6. An insert plate-based double-walled steel cofferdam according to claim 5 wherein: the upper fixing beam (2) is a right-angle steel, one right-angle side of the right-angle steel is an outer fixing plate which is vertically arranged and is welded and fixed at the bottom of the inner side of the outer wall plate (1-2), the other right-angle side of the right-angle steel is an upper fixing plate which is horizontally arranged, and the upper mounting hole is formed in the upper fixing plate.

7. An insert plate-based double-walled steel cofferdam according to claim 6 wherein: the locking nut (5) arranged at the upper end of the inclined pulling piece (3) is an upper nut, a plurality of inclined pulling pieces (3) form an inclined pulling group of the anchoring plugboard group, and an anchoring support (6) for anchoring the upper nuts on all the inclined pulling pieces (3) in the inclined pulling group is arranged on the inner side of the upper fixing beam (2); the anchoring support (6) is horizontally arranged and is arranged in parallel with the upper fixed beam (2), and the upper nuts on all the inclined tie pieces (3) in the inclined tie group are fixed on the anchoring support (6).

8. An insert plate-based double-walled steel cofferdam according to claim 7 wherein: the anchoring support (6) is composed of two symmetrically arranged channel steels, the two channel steels are horizontally arranged and are parallel to the upper fixing beam (2), a fixing groove for fixing the upper nut is formed between webs of the two channel steels in the anchoring support (6), the fixing groove gradually inclines downwards from inside to outside and is positioned on the same plane with the inclined tie piece (3);

two in anchor support (6) the channel-section steel is for being located respectively the inboard channel-section steel and the outside channel-section steel of the inside and outside both sides of upper nut, a flange welded fastening of inboard channel-section steel is in on the external fixation board, a flange welded fastening of outside channel-section steel is in on the upper fixation board.

9. An insert plate-based double-walled steel cofferdam according to claim 1 or 2, characterized in that: the structure and the size of the vertical inserting plates (4) in the anchored inserting plate group are the same, and the vertical inserting plates (4) are uniformly distributed.

10. An insert plate-based double-walled steel cofferdam according to claim 1 or 2, characterized in that: each plug-in components all include the lower slot that is located the anchor wallboard bottom outside and be located the last slot directly over the lower slot, go up the slot and the structure and the size homogeneous phase of slot down and the two is character cut in bas-relief shape picture peg groove (7), character cut in bas-relief shape picture peg groove (7) are fixed on the lateral wall of anchor wallboard.

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